Grafting method of Magnolia wufengensis

Abstract

The invention discloses a grafting method of Magnolia wufengensis. A Magnolia denudate nursery-grown plant is taken as a rootstock, a current-growth branch of the Magnolia wufengensis is taken as a scion, and when the branch has a lignifying tendency in autumn, grafting can be started. The grafting method has the following steps: cutting an angular cut reaching xylem closely at the inner side of a phloem portion, then, performing longitudinal vertical sliding cutting downwards from right above the angular cut to the angular cut so as to cut a flat and smooth long tangent plane and ensure that the exposition position of the long tangent plane is mainly disposed on a cambium layer; performing sliding peeling downwards at the opposite side of a scion axillary bud to form a flat and smooth long-horse-ear-shaped tangent plane, wherein the tangent plane bridges over the diameter of the whole branch, a heart center is seen below the middle of the long-horse-ear-shaped tangent plane, and the axillary bud is sheared at a position 0.8 to 1cm away from the upper portion of the axillary bud; and carrying out scion colligation. According to the grafting method provided by the invention, the grafting butt joint surface is enlarged, the more callus a wound generates, healing can be speeded up, through such a means, the technical difficulty of rapid breeding of the Magnolia denudate is solved, and the technical defect is detected that the survival rate by use of a conventional Magnolia denudate grating method is low.

Description

technical field [0001] The invention belongs to the field of nursery stock propagation, and relates to a plant grafting method, in particular to a safflower magnolia grafting method. Background technique [0002] Safflower Magnolia ( Magnolia wufengensis ) is a new species of Magnoliaceae discovered by Professor Ma Lvyi of Beijing Forestry University and others in Wufeng, Hubei in 2004 when they investigated the resources of Magnoliaceae. In the previous official records, there were only white, purple and single-sided light red varieties of magnolia. It was the first time in China to find a magnolia that was completely red inside and outside, and it was unique to Wufeng. [0003] Magnolia safflower has extremely rich flower morphological variation characteristics, and the flower color types have different expressions of deep red, red and light red; the number of perianth segments ranges from 9 to 46 petals; the shape of perianth segments is broad and obovate Spoon-shaped, ...

AI Technical Summary

Problems solved by technology

Because the pith of safflower magnolia seedlings accounts for a relatively large proportion and the xylem is relatively thin, when using the abdominal grafting method, if the rootstock is slightly obliquely cut, it is easy to cut to the pith center, and the butt joint surface of the cambium is less, it is difficult to heal, and the survival rate is low.

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